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Avoid errors from selecting "no selection" on multilink (issue2550722).
As discussed in issue 2550722 there are various cases where selecting
"no selection" on a multilink can result in inappropriate errors from
Roundup:
* If selecting "no selection" produces a null edit (a value was set in
the multilink in an edit with an error, then removed again, along
with all other changes, in the next form submission), so the page is
rendered from the form contents including the "-<id>" value for "no
selection" for the multilink.
* If creating an item with a nonempty value for a multilink has an
error, and the resubmission changes that multilink to "no selection"
(and this in turn has subcases, according to whether the creation
then succeeds or fails on the resubmission, which need fixes in
different places in the Roundup code).
All of these cases have in common that it is expected and OK to have a
"-<id>" value for a submission for a multilink when <id> is not set in
that multilink in the database (because the original attempt to set
<id> in that multilink had an error), so the hyperdb.py logic to give
an error in that case is thus removed. In the subcase of the second
case where the resubmission with "no selection" has an error, the
templating code tries to produce a menu entry for the "-<id>"
multilink value, which also results in an error, hence the
templating.py change to ignore such values in the list for a
multilink.
| author | Joseph Myers <jsm@polyomino.org.uk> |
|---|---|
| date | Thu, 27 Sep 2018 11:33:01 +0000 |
| parents | f63a2b15e628 |
| children | 53e9694788f5 |
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<tal:block metal:use-macro="templates/page/macros/icing"> <title metal:fill-slot="head_title" i18n:translate="">File display - <span i18n:name="tracker" tal:replace="config/TRACKER_NAME" /></title> <span metal:fill-slot="body_title" tal:omit-tag="python:1" i18n:translate="">File display</span> <td class="content" metal:fill-slot="content"> <p tal:condition="python:not (context.is_view_ok() or request.user.hasRole('Anonymous'))" i18n:translate=""> You are not allowed to view this page.</p> <p tal:condition="python:not context.is_view_ok() and request.user.hasRole('Anonymous')" i18n:translate=""> Please login with your username and password.</p> <form method="POST" onSubmit="return submit_once()" enctype="multipart/form-data" tal:condition="context/is_view_ok" tal:attributes="action context/designator"> <table class="form"> <tr> <th i18n:translate="">Name</th> <td tal:content="structure context/name/field"></td> </tr> <tr> <th i18n:translate="">Description</th> <td tal:content="structure context/description/field"></td> </tr> <tr> <th i18n:translate="">Content Type</th> <td tal:content="structure context/type/field"/> <td style="border: none" tal:condition="python: context.is_edit_ok()">Please note that for security reasons, it's not permitted to set content type to <i>text/html</i>.</td> </tr> <tr tal:condition="python:context.is_edit_ok()"> <td> <input type="hidden" name="@template" value="item"> <input type="hidden" name="@required" value="name,type"> <input type="hidden" name="@multilink" tal:condition="python:request.form.has_key('@multilink')" tal:attributes="value request/form/@multilink/value"> </td> <td tal:content="structure context/submit">submit button here</td> </tr> </table> </form> <!--<p tal:condition="python:utils.sb_is_spam(context)" class="error-message"> File has been classified as spam.</p>--> <a tal:condition="python:context.id and context.content.is_view_ok()" tal:attributes="href string:file${context/id}/${context/name}" i18n:translate="">download</a> <!--<p tal:condition="python:context.id and not context.content.is_view_ok()"> Files classified as spam are not available for download by unathorized users. If you think the file has been misclassified, please login and click on the button for reclassification. </p>--> <!-- <form method="POST" onSubmit="return submit_once()" enctype="multipart/form-data" tal:attributes="action context/designator" tal:condition="python:request.user.hasPermission('SB: May Classify')"> <input name="@csrf" type="hidden" tal:attributes="value python:utils.anti_csrf_nonce()"> <input type="hidden" name="@action" value="spambayes_classify"> <input type="submit" name="trainspam" value="Mark as SPAM" i18n:attributes="value"> <input type="submit" name="trainham" value="Mark as HAM (not SPAM)" i18n:attributes="value"> </form>--> <tal:block tal:condition="context/id" tal:replace="structure context/history" /> </td> </tal:block>
